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  • Shimano BB-UN300 Bottom Bracket - 68-122.5mm (LL123) 68-122.5mm
  • A good quality bottom bracket for traditional chainsets
  • Super-accurate bearings for smooth operation and improved durability
  • Durable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fitting
  • Maintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing life
  • Fast and easy installation without adjustment
  • Narrow body allows clearance for cable routing under the bottom bracket
  • 68-122.5mm shell width compatibility
Shimano

BB-UN300 Bottom Bracket - 68-122.5mm (LL123)

5 Reviews5 total reviews

SKU: BBUN300B23 / Barcode: 4550170619251
A good quality bottom bracket for traditional chainsets Super-accurate bearings for smooth operation and improved durability Durable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fitting Maintenance-free sealed cartridge Read more
Sale price £10.95 Regular price RRP £23.99 SAVE 54%
Size 68-122.5mm
In stock

90 Day Returns

  • A good quality bottom bracket for traditional chainsets
  • Super-accurate bearings for smooth operation and improved durability
  • Durable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fitting
  • Maintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing life
  • Fast and easy installation without adjustment
  • Narrow body allows clearance for cable routing under the bottom bracket
  • 68-122.5mm shell width compatibility

Customer Reviews

5.0
Rated 5.0 out of 5 stars
Based on 5 reviews
Total 5 star reviews: 5 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend this product
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5 reviews
  • AH
    Andy Holbrook (.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 years ago
    New Shimano BB-UN300 Bottom Bracket

    Excellent quality spare part. Well packaged and promptly sent. Fitted perfectly, got me back on the road again, thank you.

    Was this helpful?
  • MS
    michael salmon (.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 year ago
    replace worn out bottom bracket,

    only size that fits .

    my cycle .

    Was this helpful?
  • KJ
    Krzysztof Jeromkin EVie Workshop (.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 years ago
    Bottom bracket

    Good quality stuff and quick delivery 👌 👍

    Was this helpful?
  • DC
    David Cooper (.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 years ago
    Good product at a good price

    Bought to replace a worn bearing on an MTB. Fitted it without any problems and it worked perfectly as you would expect. The bottom bracket is now beautifully smooth. A high quality item and great value too. Thankyou.

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  • GB
    Geoffrey Barrett (.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 years ago
    Bottom bracket

    Just the job

    Was this helpful?

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